The following lines were added (+) and removed (-):
=== Birdies ===Birdies are frequencies your scanner uses when it operates. These operating frequencies might interfere with broadcasts on the samefrequencies. If you program one of these frequencies, you hear only noise on that frequency.If the interference is not severe, you might be able to turn SQUELCH clockwise to cut out the birdie. The most common birdies to watch for are listed below.Birdie Frequencies: 31.05 MHz 124.20 MHz 41.40 MHz 134.55 MHz 51.75 MHz 144.90 MHz 113.85 MHz 155.25 MHz===Reception Notes===Reception of the frequencies covered by your scanner is mainly "line ofsight". That means you usually cannot hear stations that are beyond thehorizon. During the summer months you may be able to hear stations in the30-50 MHz range located several hundred or even thousand of miles away.This is because of summer atmospheric conditions. This type of receptionis unpredictable but often very interesting!One very useful service is the National Weather Service's continuousweather broadcast. These broadcasts contain weather forecasts and datafor the areas around the station, plus bulletins on any threateningweather conditions. These stations use three frequencies - 162.40,162.475 or 162.55 MHz. In most areas of the country, you can receive oneof these frequencies.===A Guide To The Action Bands===With the right frequencies programmed into your PRO-Series Scanner, youcan monitor exciting events. With a little investigation, you can findactive frequencies in your community. We can give you some generalpointers, and you can take it from there. Please use caution and commonsense when you hear an emergency call. Never go to the scene of anemergency. It could be very dangerous.Find out if there is a local club that monitors your community'sfrequencies. Perhaps a local electronics repair shop that works onequipment similar to your scanner can give you frequencies used by localradio services.A volunteer police department or fire department can also be a good sourcefor this information.As a general rule on VHF, most activity is concentrated between 153.785and 155.98 MHz and then again from 158.73 to 159.46 MHz. Here you findlocal government, police, fire and most such emergency services. If youare near a railroad yard or major railroad tracks, look around 160.0 to161.9 MHz for signals.In some larger cities, there has been a move to the UHF bands foremergency service. Here, most of the activity is between 453.025 and453.95 MHz and between 456.025 and 467.925 MHz.In the UHF band, frequencies between 456.025 and 459.95 MHz and between465.025 and 469.975 MHz are used by mobile units and control stationsassociated with base and repeater units that operate 5 MHz lower (that is,451.025 to 454.950 and 460.025 to 464.975 MHz). This means that if youfind an active frequency inside one of these spreads, you can look 5 MHzlower (or higher) to find the base station/repeater for that service.===Typical Band Usage===The following is a brief listing of the typical services that use thebands you scanner can receive. This listing helps you decide which rangesyou would like to scan.These frequencies are subject to change, and might vary from area to area.For a more complete listing refer to the Police Call Radio Guide availableat you local RadioShack store. Abbreviations: Affiliate Radio System: ............................................. Mars Amateur: ............................................................. Ham Automobile Emergency: ......................................... Auto Emer. Broadcast Remote: ................................................... BC.R Bureau of Reclamation: ......................................... Bur.Recl. Civil Air Patrol: .................................................... CAP Department of Agriculture and Forestry: .................... Agr. And For. Fire Department: .................................................... F.D. Forest Products: ............................................... For.Prod. Forestry Conservation: ........................................ Fors.Cons. Government: ........................................................ Govt. Highway Maintenance: ................................................ Hwy. Land Transportation: ............................................ Land Tr. Local Government: ................................................ L.Govt. Manufacturers: ...................................................... Mfg. Military: ............................................................ MIL Mobile Telephone : .............................................. Mob.Tel. Motion Picture: ................................................... Mot.P. Motor Carrier: .............................................. Buses.Trucks National Parks: ................................................. Nat.Park Petroleum: .......................................................... Pet. Police: ............................................................. P.D. Power Utilities: ................................................... Power Radio Paging: ....................................................... Page Railroad: ........................................................... R.R. Relay Press: ....................................................... Press State Police: .................................................... St.P.D. Special Emergency: .............................................. Sp.Emer. Special Industry: ................................................ Sp.Ind. Taxicab Radio: ...................................................... Taxi Telephone Maintenance: ........................................ Tel.Maint. U.S. Coastal and Geodetic Survey: ............................. U.S.C.G.S. U.S. Navy: ........................................................... USN U.S. Weather Bureau: ............................................ U.S.W.B.ATTENTION: Your scanner may not be able to receive all frequencies and/or modes of reception that are contained within this document.For complete information of your scanner's capabilities, be sure to read your owner's manual completely.===Guide To Frequencies===National Weather Frequencies: 1) 161.650 5) 162.440 9) 162.525 2) 161.775 6) 162.450 10) 162.550 3) 162.400 7) 162.475 11) 163.275 4) 162.425 8) 162.500Ham Radio FrequenciesHam operators often transmit emergency information when other communication methods break down. The following chart shows some of thefrequencies that Hams use. Wavelength Frequency (Meters) (MHz) 10-meter 28.000-29.700 6-meter 50.000-54.000 2-meter 144.000-148.000 70-cm 420.000-450.000The following are the channels and frequencies of the Citizens Band: <nowiki> 1) 26.965 21) 27.215</nowiki> <nowiki> 2) 26.975 22) 27.225</nowiki> <nowiki> 3) 26.985 23) 27.255</nowiki> <nowiki> 4) 27.005 24) 27.235</nowiki> <nowiki> 5) 27.015 25) 27.245</nowiki> <nowiki> 6) 27.025 26) 27.265</nowiki> <nowiki> 7) 27.035 27) 27.275</nowiki> <nowiki> 8) 27.055 28) 27.285</nowiki> <nowiki> 9) 27.065 29) 27.295</nowiki> <nowiki>10) 27.075 30) 27.305</nowiki> <nowiki>11) 27.085 31) 27.315 </nowiki> <nowiki>12) 27.105 32) 27.325</nowiki> <nowiki>13) 27.115 33) 27.335</nowiki> <nowiki>14) 27.125 34) 27.345</nowiki> <nowiki>15) 27.135 35) 27.355</nowiki> <nowiki>16) 27.155 36) 27.365</nowiki> <nowiki>17) 27.165 37) 27.375</nowiki> <nowiki>18) 27.175 38) 27.385</nowiki> <nowiki>19) 27.185 39) 27.395</nowiki> <nowiki>20) 27.205 40) 27.405</nowiki>===Guide To The Action Bands===United States Broadcast BandsIn the United States, there are several broadcast bands. The standard AMand FM bands are probably the most well known. There are also fourtelevision audio broadcast bands-the lower three transmit on the VHF bandand the fourth transmits on the UHF band. Frequency Range Allocation 54.0 - 72.0 MHz ........................................... VHF Television 76.0 - 88.0 MHz ........................................... VHF Television 88.0 - 108.0 MHz ............................................. Standard FM 174.0 - 216.0 MHz ......................................... VHF Television 470.0 - 805.75 MHz ........................................ UHF Television===International Broadcast Bands===Several short-wave bands are allocated for international broadcastingbecause of the nature of propagation of high frequencies. The bands aresometimes identified according to the approximate wavelength of thesignals in meters. Your scanner may receive the 11-meter band, from25.6 - 26.10 MHz.Typical Band Usage <nowiki>HF Band (3.0 - 30.0 MHz):</nowiki> <nowiki></nowiki> <nowiki>Mid Range: ............................................. 25.00 - 28.63 MHz</nowiki> <nowiki>10-Meter Amateur Band: ................................. 28.00 - 29.70 MHz</nowiki> <nowiki>High Range: ............................................ 29.70 - 29.90 MHz</nowiki> <nowiki></nowiki> <nowiki>VHF Band (30.00 - 300.0 MHz):</nowiki> <nowiki></nowiki> <nowiki>Low range: ............................................. 30.00 - 50.00 MHz</nowiki> <nowiki>6-Meter Amateur: ....................................... 50.00 - 54.00 MHz</nowiki> <nowiki>FM-TV Audio Broadcast, Wide Band: ...................... 54.00 - 72.00 MHz</nowiki> <nowiki>FM Radio Broadcast, Wide Band: ........................ 88.00 - 108.00 MHz</nowiki> <nowiki>Aircraft: ............................................ 108.00 - 136.00 MHz</nowiki> <nowiki>U.S. Government: ..................................... 138.00 - 144.00 MHz</nowiki> <nowiki>2-Meter Amateur: ..................................... 144.00 - 148.00 MHz</nowiki> <nowiki>High Range: .......................................... 148.00 - 174.00 MHz</nowiki> <nowiki>New Mobile Narrow Band: .............................. 220.00 - 222.00 MHz</nowiki> <nowiki>1.3-Meter Amateur: ................................... 222.00 - 225.00 MHz</nowiki> <nowiki>Military Aircraft: ................................... 225.00 - 287.80 MHz</nowiki> <nowiki></nowiki> <nowiki>UHF Band (300.00 MHz - 3.0 GHz):</nowiki> <nowiki></nowiki> <nowiki>Military Aircraft: ................................... 311.00 - 384.00 MHz</nowiki> <nowiki>U.S. Government: ..................................... 406.00 - 470.00 MHz</nowiki> <nowiki>0.6-Meter Amateur: ................................... 420.00 - 450.00 MHz</nowiki> <nowiki>Low Range: ........................................... 450.00 - 470.00 MHz</nowiki> <nowiki>FM-TV Audio Broadcast, Wide Band: .................... 470.00 - 806.00 MHz</nowiki> <nowiki>Conventional Systems: ................................ 851.00 - 856.00 MHz</nowiki> <nowiki>Conventional/Trunked Systems: ........................ 856.00 - 861.00 MHz</nowiki> <nowiki>Trunked Systems: ..................................... 861.00 - 866.00 MHz</nowiki> <nowiki>Public Safety: ....................................... 866.00 - 869.00 MHz</nowiki> <nowiki>Common Carrier: ...................................... 869.00 - 894.00 MHz</nowiki> <nowiki>Private Trunked: ..................................... 935.00 - 940.00 MHz</nowiki> <nowiki>General Trunked: ..................................... 940.00 - 941.00 MHz</nowiki>Primary Usage:As a general rule, most of the radio activity is concentrated on thefollowing frequencies: <nowiki>VHF Band:</nowiki> <nowiki></nowiki> <nowiki>2-Meter Amateur Band: .............................. 144.000 - 148.000 MHz</nowiki> <nowiki>Government, police, and Fire: ...................... 153.785 - 155.980 MHz</nowiki> <nowiki>Emergency Services: ................................ 158.730 - 159.460 MHz</nowiki> <nowiki>Railroad: .......................................... 160.000 - 161.900 MHz</nowiki> <nowiki></nowiki> <nowiki>UHF Band:</nowiki> <nowiki></nowiki> <nowiki>.6 cm Amateur Band FM Repeaters: ................... 440.000 - 450.000 MHz</nowiki> <nowiki>Land Mobile "Paired" Frequencies: .................. 450.000 - 470.000 MHz</nowiki> <nowiki>Base Stations: ..................................... 451.025 - 454.950 MHz</nowiki> <nowiki>Mobile Units: ...................................... 456.025 - 459.950 MHz</nowiki> <nowiki>Repeater Units: .................................... 460.025 - 464.975 MHz</nowiki> <nowiki>Control Stations: .................................. 465.025 - 469.975 MHz</nowiki>NOTE: UHF remote control stations and mobile units typically operate at 5 MHz higher than their associated base and relay repeater units.===Specified Intervals===Frequencies in different bands are accessible only at specific intervals.For Example: VHF, HAM, and Government: .................................. 5.0 kHz steps All Others: ............................................... 12.5 kHz steps Aircraft: ................................................. 25.0 kHz stepsNote: Your scanner rounds the entered frequency to the nearest valid frequency. For example, if you try to enter 151.473, the scanner might accept this as 151.470.===Band Allocation===To help you decide which frequency ranges to search, use the followinglisting of the typical services that use the frequencies your scannerreceives. These frequencies are subject to change, and might vary fromarea to area. For a more complete listing, refer to the "Police-Call RadioGuide including Fire and Emergency Services", as well as "Beyond PoliceCall", "Aeronautical Directory", "Nautical Directory" and "Now you'reTalking" texts available at your local RadioShack store.Abbreviations <nowiki>AIR: ............................................................ Aircraft</nowiki> <nowiki>BIFC: .................................. Boise (ID) Interagency Fire Cache</nowiki> <nowiki>BUS: ............................................................ Business</nowiki> <nowiki>CAP: .................................................... Civil Air Patrol</nowiki> <nowiki>CB: ........................................................ Citizens Band</nowiki> <nowiki>CCA: ...................................................... Common Carrier</nowiki> <nowiki>CSB: ................................................ Conventional Systems</nowiki> <nowiki>CTSB: ....................................... Conventional/Trunked Systems</nowiki> <nowiki>FIRE: .................................................... Fire Department</nowiki> <nowiki>HAM: ................................................. Amateur (HAM) Radio</nowiki> <nowiki>GOVT: ................................................. Federal Government</nowiki> <nowiki>GMR: ................................................ General Mobile Radio</nowiki> <nowiki>GTR: ..................................................... General Trunked</nowiki> <nowiki>IND: ................................................. Industrial Services</nowiki> <nowiki>MARI: ............................................. Maritime Limited Coast</nowiki> <nowiki>MARS: .................................... Military Affiliate Radio System</nowiki> <nowiki>MED: .......................................... Emergency/Medical Services</nowiki> <nowiki>MIL: ....................................................... U.S. Military</nowiki> <nowiki>MOV: ....................................... Motion Picture/Video Industry</nowiki> <nowiki>NEW: ................................................... New Mobile Narrow</nowiki> <nowiki>NEWS: ........................................................ Relay Press</nowiki> <nowiki>OIL: .............................................. Oil/Petroleum Industry</nowiki> <nowiki>POL: ................................................... Police Department</nowiki> <nowiki>PUB: ..................................................... Public Services</nowiki> <nowiki>PSB: ....................................................... Public Safety</nowiki> <nowiki>PTR: ..................................................... Private Trunked</nowiki> <nowiki>ROAD: ......................................... Road & Highway Maintenance</nowiki> <nowiki>RTV: .................................... Radio/TV Remote Broadcast Pickup</nowiki> <nowiki>TAXI: ...................................................... Taxi Services</nowiki> <nowiki>TELBL: .................................................. Mobile Telephone</nowiki> <nowiki>TELC: ................................................ Cordless Telephones</nowiki> <nowiki>TELM: .............................................. Telephone Maintenance</nowiki> <nowiki>TOW: .......................................................... Tow Trucks</nowiki> <nowiki>TRAN: ............................................ Transportation Services</nowiki> <nowiki>TSB: ..................................................... Trunked Systems</nowiki> <nowiki>TVn: ............................................... FM-TV Audio Broadcast</nowiki> <nowiki>USXX: .............................................. Government Classified</nowiki> <nowiki>UTIL: ............................................ Power & Water Utilities</nowiki> <nowiki>WTHR: ............................................................ Weather</nowiki> <nowiki></nowiki> <nowiki>High Frequency (HF)-(3 - 30 MHz):</nowiki> <nowiki>High Band - (25.00 - 27.36 MHz):</nowiki> <nowiki></nowiki> <nowiki>25.020 - 25.320: ..................................................... IND</nowiki> <nowiki>25.870 - 26.470: ..................................................... RTV</nowiki> <nowiki>26.62: ............................................................... CAP</nowiki> <nowiki>26.966 - 27.405: ...................................................... CB</nowiki> <nowiki>27.430 - 27.630: ..................................................... BUS</nowiki> <nowiki></nowiki> <nowiki>10-Meter Amateur Band - (28.0 - 29.7 MHz):</nowiki> <nowiki></nowiki> <nowiki>28.000 - 29.700: ..................................................... HAM</nowiki> <nowiki></nowiki> <nowiki>Very High Frequency (VHF) - (30 - 300 MHz):</nowiki> <nowiki></nowiki> <nowiki>Low Band - (29.7 - 50 MHz - in 5 kHz steps):</nowiki> <nowiki></nowiki> <nowiki>29.700 - 29.790: ..................................................... IND</nowiki> <nowiki>29.900 - 30.550: ............................................... GOVT, MIL</nowiki> <nowiki>30.580 - 31.980: ................................................ IND, PUB</nowiki> <nowiki>32.000 - 32.990: ............................................... GOVT, MIL</nowiki> <nowiki>33.020 - 33.980: ........................................... BUS, IND, PUB</nowiki> <nowiki>34.010 - 34.990: ............................................... GOVT, MIL</nowiki> <nowiki>35.020 - 35.980: ..................................... BUS, PUB, IND, TELM</nowiki> <nowiki>36.000 - 36.230: ............................................... GOVT, MIL</nowiki> <nowiki>36.250: ............................................... Oil spill clean up</nowiki> <nowiki>36.270 - 36.990: ............................................... GOVT, MIL</nowiki> <nowiki>37.020 - 37.980: ................................................ PUB, IND</nowiki> <nowiki>38.000 - 39.000: ............................................... GOVT, MIL</nowiki> <nowiki>39.020 - 39.980: ..................................................... PUB</nowiki> <nowiki>40.000 - 42.000: ......................................... GOVT, MIL, MARI</nowiki> <nowiki>42.020 - 42.940: ..................................................... POL</nowiki> <nowiki>42.960 - 43.180: ..................................................... IND</nowiki> <nowiki>43.220 - 43.680: .......................................... TELM, IND, PUB</nowiki> <nowiki>43.700 - 44.600: .................................................... TRAN</nowiki> <nowiki>44.620 - 46.580: ................................................ POL, PUB</nowiki> <nowiki>46.600 - 46.990: .............................................. GOVT, TELC</nowiki> <nowiki>47.020 - 47.400: ..................................................... PUB</nowiki> <nowiki>47.420: ............................................... American Red Cross</nowiki> <nowiki>47.440 - 49.580: ................................................ IND, PUB</nowiki> <nowiki>49.610 - 49.990: ............................................... MIL, TELC</nowiki> <nowiki></nowiki> <nowiki>6-METER Amateur Band (50-54 MHz):</nowiki> <nowiki></nowiki> <nowiki>50.00 - 54.00: ....................................................... HAM</nowiki> <nowiki></nowiki> <nowiki>FM-TV Audio Broadcast, Wide Band (54-72 MHz):</nowiki> <nowiki></nowiki> <nowiki>59.750: .............................................................. TV2</nowiki> <nowiki>65.750: .............................................................. TV3</nowiki> <nowiki>71.750: .............................................................. TV4</nowiki> <nowiki></nowiki> <nowiki>Land Mobile Service Band (72-76 MHz):</nowiki> <nowiki></nowiki> <nowiki>FM-TV Audio Broadcast, Wide Band (76-88 MHz):</nowiki> <nowiki></nowiki> <nowiki>81.750: .............................................................. TV5</nowiki> <nowiki>87.750: .............................................................. TV6</nowiki> <nowiki></nowiki> <nowiki>FM Radio Broadcast, Wide Band (88-108 MHz):</nowiki> <nowiki></nowiki> <nowiki>Aircraft Band (108-136 MHz):</nowiki> <nowiki></nowiki> <nowiki>108.000 - 121.490: ................................................... AIR</nowiki> <nowiki>121.500: ................................................... AIR emergency</nowiki> <nowiki>121.510 - 136.000: ................................................... AIR</nowiki> <nowiki></nowiki> <nowiki>U.S. GOVERNMENT BAND (138-144 MHz):</nowiki> <nowiki></nowiki> <nowiki>137.000 - 144.000: ............................................. GOVT, MIL</nowiki> <nowiki></nowiki> <nowiki>VHF-Hi BAND (148-174 MHz):</nowiki> <nowiki></nowiki> <nowiki>148.050 - 150.345: ........................................ CAP, MARS, MIL</nowiki> <nowiki>150.775 - 150.790: ................................................... MED</nowiki> <nowiki>150.815 - 150.965: ................................................... TOW</nowiki> <nowiki>150.980: .............................................. Oil spill clean up</nowiki> <nowiki>150.995 - 151.130: .................................................. ROAD</nowiki> <nowiki>151.145 - 151.475: ................................................... POL</nowiki> <nowiki>151.490 - 151.955: .............................................. IND, BUS</nowiki> <nowiki>151.985: ............................................................ TELM</nowiki> <nowiki>152.030 - 152.240: .................................................. TELB</nowiki> <nowiki>152.270 - 152.465: ............................................. IND, TAXI</nowiki> <nowiki>152.480: ............................................................. BUS</nowiki> <nowiki>152.510 - 152.840: .................................................. TELB</nowiki> <nowiki>152.870 - 153.020: .............................................. IND, MOV</nowiki> <nowiki>153.035 - 153.175: ........................................ IND, OIL, UTIL</nowiki> <nowiki>153.740 - 154.445: ............................................. PUB, FIRE</nowiki> <nowiki>154.490 - 154.570: .............................................. IND, BUS</nowiki> <nowiki>154.585: .............................................. Oil spill clean up</nowiki> <nowiki>154.600 - 154.625: ................................................... BUS</nowiki> <nowiki>154.665 - 156.240: ................................... MED, ROAD, POL, PUB</nowiki> <nowiki>165.255: ............................................................. OIL</nowiki> <nowiki>156.275 - 157.425: .................................................. MARI</nowiki> <nowiki>157.450: ............................................................. MED</nowiki> <nowiki>157.470 - 157.515: ................................................... TOW</nowiki> <nowiki>157.530 - 157.725: ............................................. IND, TAXI</nowiki> <nowiki>157.740: ............................................................. BUS</nowiki> <nowiki>157.770 - 158.100: .................................................. TELB</nowiki> <nowiki>158.130 - 158.460: ............................. BUS, IND, OIL, TELM, UTIL</nowiki> <nowiki>158.490 - 158.700: .. ............................................... TELB</nowiki> <nowiki>158.730 - 159.465: ........................................ POL, PUB, ROAD</nowiki> <nowiki>159.480: ............................................................. OIL</nowiki> <nowiki>159.495 - 161.565: .................................................. TRAN</nowiki> <nowiki>161.580: ............................................................. OIL</nowiki> <nowiki>161.600 - 162.000: ............................................. MARI, RTV</nowiki> <nowiki>162.0125 - 162.35: ....................................... GOVT, MIL, USXX</nowiki> <nowiki>162.400 - 162.550: .................................................. WTHR</nowiki> <nowiki>162.5625 - 162.6375: ..................................... GOVT, MIL, USXX</nowiki> <nowiki>162.6625: ............................................................ MED</nowiki> <nowiki>162.6875 - 163.225: ...................................... GOVT, MIL, USXX</nowiki> <nowiki>163.250: ............................................................. MED</nowiki> <nowiki>163.275 - 166.225: ....................................... GOVT, MIL, USXX</nowiki> <nowiki>166.250: ................................................. GOVT, RTV, FIRE</nowiki> <nowiki>166.275 - 169.400: ............................................ GOVT, BIFC</nowiki> <nowiki>169.445: .................................................. WIRELESS MIKES</nowiki> <nowiki>169.500: ............................................................ GOVT</nowiki> <nowiki>169.505: .................................................. WIRELESS MIKES</nowiki> <nowiki>169.55 - 169.9875: ....................................... GOVT, MIL, USXX</nowiki> <nowiki>170.000: ............................................................ BIFC</nowiki> <nowiki>170.025 - 170.150: ....................................... GOVT, RTV, FIRE</nowiki> <nowiki>170.175 - 170.225: .................................................. GOVT</nowiki> <nowiki>170.245 - 170.305: ........................................ WIRELESS MIKES</nowiki> <nowiki>170.350 - 170.400: ............................................. GOVT, MIL</nowiki> <nowiki>170.425 - 170.450: .................................................. BIFC</nowiki> <nowiki>170.475: ............................................................. PUB</nowiki> <nowiki>170.4875 - 173.175: ............................ GOVT, PUB, WIRELESS MIKES</nowiki> <nowiki>173.225 - 173.375: ....................................... MOV, NEWS, UTIL</nowiki> <nowiki>173.3875 - 178.5375: ................................................. MIL</nowiki> <nowiki>173.5625 - 173.5875: ............................. MIL Medical/Crash Crews</nowiki> <nowiki>173.60 - 173.9875: .................................................. GOVT</nowiki> <nowiki></nowiki> <nowiki>FM-TV Audio Broadcast, VHF Wide Band (174-216 MHz):</nowiki> <nowiki></nowiki> <nowiki>179.750: ............................................................. TV7</nowiki> <nowiki>185.750: ............................................................. TV8</nowiki> <nowiki>191.750: ............................................................. TV9</nowiki> <nowiki>197.750: ............................................................ TV10</nowiki> <nowiki>203.750: ............................................................ TV11</nowiki> <nowiki>209.750: ............................................................ TV12</nowiki> <nowiki>215.750: ............................................................ TV13</nowiki> <nowiki></nowiki> <nowiki>New Mobil Narrow Band (220-222 MHz):</nowiki> <nowiki></nowiki> <nowiki>220.000 - 222.000: ................................................... NEW</nowiki> <nowiki></nowiki> <nowiki>1.3-Meter Amateur Band (222-225 MHz):</nowiki> <nowiki></nowiki> <nowiki>222.000 - 225.000: ................................................... HAM</nowiki> <nowiki></nowiki> <nowiki>MILITARY AIRCRAFT BAND (237.9-287.8 MHz):</nowiki> <nowiki></nowiki> <nowiki>237.900: ..................................... Coast Guard Search & Rescue</nowiki> <nowiki>239.800: ..................................................... FAA Weather</nowiki> <nowiki>241.000: ............................................................ ARMY</nowiki> <nowiki>243.000: ....................................................... EMERGENCY</nowiki> <nowiki>255.400: .............................................. FAA FLIGHT SERVICE</nowiki> <nowiki>257.800: ................................................. CIVILIAN TOWERS</nowiki> <nowiki>287.800: ............................................. Coast Guard Air/Sea </nowiki> <nowiki>Rescue</nowiki> <nowiki></nowiki> <nowiki>Ultra High Frequency (UHF)-(300 MHz-3 GHz)</nowiki> <nowiki></nowiki> <nowiki>Military Aircraft Band (319.1 - 383.9 MHz):</nowiki> <nowiki></nowiki> <nowiki>319.100: ............................................. FAA Traffic Control</nowiki> <nowiki>321.000 - 336.600: ............................................. Air Force</nowiki> <nowiki>342.500 - 344.600: ........................................... FAA Weather</nowiki> <nowiki>346.400 - 364.200: ............................. Air Force Traffic Control</nowiki> <nowiki>381.800 - 383.900: ........................................... Coast Guard</nowiki> <nowiki></nowiki> <nowiki>U.S. Government Band (406-420 MHz):</nowiki> <nowiki></nowiki> <nowiki>406.125 - 419.975: ............................................ GOVT, USXX</nowiki> <nowiki></nowiki> <nowiki>70-cm Amateur Band (420-450 MHz):</nowiki> <nowiki></nowiki> <nowiki>420.000 - 450.000: ................................................... HAM</nowiki> <nowiki></nowiki> <nowiki>Low Band (450-470 MHz):</nowiki> <nowiki></nowiki> <nowiki>450.050 - 450.925: ................................................... RTV</nowiki> <nowiki>451.025 - 452.025: .................................. IND, OIL, TELM, UTIL</nowiki> <nowiki>452.0375 - 453.00: ............................ IND, TAXI, TRAN, TOW, NEWS</nowiki> <nowiki>453.0125 - 453.9875: ................................................. PUB</nowiki> <nowiki>454.000: ............................................................. OIL</nowiki> <nowiki>454.025 - 454.975: .................................................. TELB</nowiki> <nowiki>455.050 - 455.925: ................................................... RTV</nowiki> <nowiki>457.525 - 457.600: ................................................... BUS</nowiki> <nowiki>458.025 - 458.175: ................................................... MED</nowiki> <nowiki>460.0125 - 460.6375: ...................................... FIRE, POL, PUB</nowiki> <nowiki>460.650 - 462.175: ................................................... BUS</nowiki> <nowiki>462.1875 - 462.450: ............................................. BUS, IND</nowiki> <nowiki>462.4625 - 462.525: ................................. IND, OIL, TELM, UTIL</nowiki> <nowiki>462.550 - 462.725: ................................................... GMR</nowiki> <nowiki>462.750 - 462.925: ................................................... BUS</nowiki> <nowiki>462.9375 - 463.1875: ................................................. MED</nowiki> <nowiki>463.200 - 467.925: ................................................... BUS</nowiki> <nowiki></nowiki> <nowiki>FM-TV Audio Broadcast, UHF Wide Band (470-512 MHz):</nowiki> <nowiki>(Channels 14-69 in 6 MHz steps):</nowiki> <nowiki></nowiki> <nowiki>475.750: ...................................................... Channel 14</nowiki> <nowiki>481.750: ...................................................... Channel 15</nowiki> <nowiki>487.750: ...................................................... Channel 16</nowiki> <nowiki>805.750: ...................................................... Channel 69</nowiki> <nowiki></nowiki> <nowiki>Note: Some cities use the 470-512 MHz band for land/mobile service.</nowiki> <nowiki></nowiki> <nowiki>Conventional Systems Band - Locally Assigned</nowiki> <nowiki></nowiki> <nowiki>851.0125 - 855.9875: ................................................. CSB</nowiki> <nowiki></nowiki> <nowiki>Conventional/Trunked Systems Band - Locally Assigned</nowiki> <nowiki></nowiki> <nowiki>856.0125 - 860.9875: ................................................ CTSB</nowiki> <nowiki></nowiki> <nowiki>Trunked Systems Band - Locally Assigned</nowiki> <nowiki></nowiki> <nowiki>861.0125 - 865.9875: ................................................. TSB</nowiki> <nowiki></nowiki> <nowiki>Public Safety Band - Locally Assigned</nowiki> <nowiki></nowiki> <nowiki>866.0125 - 868.9875: ................................................. PSB</nowiki> <nowiki></nowiki> <nowiki>Common Carrier</nowiki> <nowiki></nowiki> <nowiki>869.010 - 894.000: ................................................... CCA</nowiki> <nowiki></nowiki> <nowiki>Private Trunked</nowiki> <nowiki></nowiki> <nowiki>935.0125 - 939.9875: ................................................. PTR</nowiki> <nowiki></nowiki> <nowiki>General Trunked</nowiki> <nowiki></nowiki> <nowiki>940.0125 - 940.9875: ................................................. GTR</nowiki>Frequency ConversionThe tuning of a station can be expressed in frequency (kHz or MHz) or inwavelength (meters). The following information can help you make thenecessary conversions.*1 MHz (million)=1,000 kHz (thousand)To convert MHz to kHz, multiply by 1,000:*9.62 MHz x 1000 = 9620 kHzTo convert from kHz to MHz, divide by 1,000*2780 kHz / 1000 = 2.780 MHzTo convert MHz to meters, divide 300 by the number of megahertz*300 / 7.1 MHz = 42.25 metersA Note on Image ReceptionRadios work by simple mathematics. For example, most tune to a frequencyby mixing that frequency with another (local oscillator) frequency whichis slightly different. This mixing process primarily gives us the twooriginal frequencies, their sum, and their difference. Well, the radio'sIntermediate Frequency (I.F.) filter normally passes either the sum ordifference frequency, and this is then processed into the sound we hear.Because nothing is perfect, certain "harmonics" will also get through ifthey are strong enough. For example, if a radio's I.F. is 10.7 MHz, wemight be able to tune to a frequency 21.4 MHz (2 x I.F.) above (or below,depending on the radio's design) a strong signal and hear it! This is moreevident in a double-conversion radio than a triple-conversion radio,because the triple-conversion radio's 1st intermediate frequency is quitehigh. This causes the image to be so far off frequency that it is easy toeffectively filter it out.So remember that just because a radio doesn't receive something whichanother does is not necessarily an indication of a problem. The one radiomay simply not be "tricked" into picking up an image! This rejection ofundesired signals is one reason that a triple-conversion receiver costsmore than a similar dual-conversion model.You might be interested in finding more out about radio. One goodlocation to start looking is your local public library. You might alsowish to contact the A.R.R.L., as they are an excellent source ofinformative texts on the subject.Contact: Amateur Radio Relay League 225 Main St., Newington, CT 06111-1494 USA(CD EB 2/22/00)